An organic compund ′A′ on treatment with NH3 gives ′B′ which on heating gives ′C′,′C′ when treated with Br2 in the presence of KOH produces ethylamine. Compound ′A′ is :
A
CH3CH2COOH
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B
CH3COOH
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C
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D
CH3CH2CH2COOH
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Solution
The correct option is ACH3CH2COOH Br2/KOH is the reagent for Hoffmann bromamide reaction. In this reaction amide is coverted primary amine.
Thus, 'C' is an amide.
Carboxylic salt on heeating gives amide.
Thus, 'A' is a carboxylic acid which on reaction with NH3 forms salt.
Product of hoffmann bromamide reaction is ethamine. Thus, 'A' is ethanoic acid.